The transactions in particular can be coming in quite frequently and in a
batch. I would like to be able to change the document using a batch of
partial updates carrying the changes to the same document. But since the
overall document can be quite beefy (customer name, characteristics, etc.)
I would like to avoid the re-indexing of the same document per single
partial update. I would like to be able to turn off ES indexing, apply the
batch hoping the batch will be merged in the transaction log, and turn
indexing back on, hoping the total end result change will be re-indexed.
Is this not possible? If not, what is the best way to solve this type of
use case? Would you normalize the data structure into a parent Customer
with children etc??

How efficiently can ES handle many partial updates to the same document if
the document is say a few pages long with 20-30 different fields some of
which are multi-valued arrays?